package io;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

/**
 * 在InputStream和OutputStream两个超类定义了块读写操作
 */
public class CopyDemo2 {
    public static void main(String[] args) throws IOException {
        FileInputStream fis=new FileInputStream("228330043.jpg");
        FileOutputStream fos=new FileOutputStream("image3.jpg");
        byte[] data=new byte[1024*10];
        int d;
        long start=System.currentTimeMillis();
        while ((d=fis.read(data))!=-1){
            fos.write(data,0,d);
        }
        long end=System.currentTimeMillis();
        System.out.println("复制完毕了"+(end-start)+"毫秒");
        fis.close();
        fos.close();
    }
}
